Alarm clock



FIG. 1 is a front perspective view of the alarm clock showing my new design;

FIG. 2 is back perspective view of the alarm clock showing my new design;

FIG. 3 is a side view of the alarm clock showing my new design;

FIG. 4 is a top plan view of the alarm clock showing my new design; and,

FIG. 5 is a bottom plan view of the alarm clock showing my new design. 

The ornamental design for an alarm clock, as shown. 